Frictional hinge for mirrors



y J.v e. BLAIR. FRIGTIONAL HINGE POR MIRRQRS- No. 290,839. Patented Dee. 25, 1883.`

(No Model.)

e lll UNITE STATES PATENT OEEICE.

JAMES CREIGHTON BLAIR, OF COLUMBUS, OHIO, ASSIGNOR OF TVO-THIRDS TO OSCAR A. NICKLAUS, OF SAME PLACE, AND ADELBERT D. HOUSTON,

OF LOGAN, OHIO.

FR|cT|oNAL HINGEFOR MIRRORS, ste.

SPECIFICATION forming part of Letters Patent No. 290,839, dated December 25, 1883,

Application filed October 17, 1883. (No model.)

To all whom it may con/cern:

Be it known that I, JAMES GREIGHTON BLAIR, a citizen ofthe United States, residing at Columbus, inthe county of Franklin and 5 State of Ohio, have invented a new and useful Improvement in Frictional Hinges for Mirrors, &c.; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accom- Io panying drawings, forming part of this speciiication, in which- Figure l is a perspective view of Iny improved frictional hinge applied to a swinging mirror; and Fig. 2 is a front elevation of the I 5 same, partly in section.

My invention relates to improvements in frictional hinges for mirrors, &c. 5 and it consists in the peculiar construction and arrangement of the parts, as hereinafter more fully 2o set forth,and pointed out in the claims.

In the accompanying drawings, I have shown my improved frictional hinge applied to aswinging mirror7 (though it may be applied elsewhere) in which a represents one of the 25 stationary uprights or supports to which the mirror is pivoted. v

b represents one face of an angular bracket, o, provided with holes for the passage of screws c, by means of which the bracket o is 3o secured to the front face ofthe upright a.

d represents the other face of the bracket o at right angles to the `face b, and provided with an oriiice, n, for the passage of a split pivot, it, hereinafterI more fully described.

m represents one of the longitudinal sides of the mirror-frame m o represents an angular bracket composed of the face b, secured by screws c to the longitudinal side m ofthe mirror-frame m.

d represents the other face of the bracket o at right angles to the face b. The pivot h is split centrally at 7c, and the angular faces b d' and the split pivot h are all made in one piece, or integral with each other.

Z represent-s a washer provided with a central orifice fitting over the pivot L.

w represents a wedge, which is driven into the slot k in the split pivot h, the periphery of the latter being thus forced out tightly against the sides of the orice n in the face d of the bracket o, and producing friction between the pivot h and the sides of the orifice n, which thus acts as a stop, and causes the mirror-frame to remain stationary at any desired angle.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The frictional .hinge herein described, consisting of an angular bracket provided with a split pivot,a second angular bracket provided with an orifice for the passage of the split pivot, and a wedge for expanding the split pivot, substantially as shown and described.

2. The combination,with the mirror-frame m and angular bracket o,secured thereto and provided with t-he split pivot h, of the stationary upright a, angular bracket o, secured thereto and having the orice n, the angular bracket o and split pivot h beingeall made in one piece, washer Z, and wedge wfsuhstantially as shown and described.

JAMES CREIGH'ION BLAIR.

Vitnesses:

WILLIAM P. BROWN, JAs. FINLEY BROWN. 

